Lost to the world Meaning in English
expression
Definition
Completely unaware of one's surroundings, often because of deep thought, sleep, or being absorbed in an activity.
Usage & Nuances
Idiomatic and somewhat literary. Used to describe people totally absorbed (e.g., reading, sleeping). Suitable for both spoken and written English, but not formal documents. Tends to suggest deep focus or being unreachable.
Example Sentences
He was so tired that he was lost to the world on the couch.
basic
During the exam, she was lost to the world and didn't hear the bell.
basic
The baby is sleeping, lost to the world.
basic
Once he put on his headphones, he was lost to the world for hours.
natural
She gets so into her painting that she's lost to the world until someone calls her name.
natural
When he reads a good book, he's lost to the world — you can't get his attention.
natural